drm/amdkfd: Fix resource leak in criu restore queue

To avoid memory leaks, release q_extra_data when exiting the restore queue.
v2: Correct the proto (Alex)
Signed-off-by: Jesse Zhang <jesse.zhang@amd.com>
Reviewed-by: Tim Huang <tim.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c

@@ -1046,6 +1046,7 @@ int kfd_criu_restore_queue(struct kfd_process *p,
 		pr_debug("Queue id %d was restored successfully\n", queue_id);
 
 	kfree(q_data);
+	kfree(q_extra_data);
 
 	return ret;
 }